Home / 102,731.61-141,772.65-57,409.71

Finding the Fourth Proportional to 102,731.61, 141,772.65 and 57,409.71

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Solution

The fourth proportional to 102,731.61, 141,772.65 and 57,409.71 is: 79,227.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,731.61 : 141,772.65 = 57,409.71 : x
  2. Step 2: Convert to fraction form
    102,731.61/141,772.65 = 57,409.71/x
  3. Step 3: Cross multiply
    102,731.61x = 141,772.65 × 57,409.71
  4. Step 4: Simplify right side
    102,731.61x = 8,139,126,722.43
  5. Step 5: Solve for x
    x = 8,139,126,722.43/102,731.61
  6. Step 6: Final answer
    x = 79,227.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.